Stoichometry
Consider the reaction represented by the following equation:
2H2+O2→2H2O2H2+O2→2H2O
If 10 moles of hydrogen gas (H2H2) react completely with excess oxygen gas (O2O2), what is the maximum number of moles of water (H2OH2O) produced?
15 Moles
A block of mass mm is placed on a frictionless inclined plane inclined at an angle θθ to the horizontal. The block is connected to a spring with a spring constant kk, as shown in the diagram below:
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If the block is released from rest at the top of the incline, which of the following correctly represents the potential energy stored in the spring when the block reaches the bottom of the incline?
A) 12kx221kx2, where xx is the compression of the spring.
B) 12mgx21mgx, where xx is the compression of the spring.
C) 12kx21kx, where xx is the displacement of the block along the incline.
D) 12mgx221mgx2, where xx is the displacement of the block along the incline.
Correct Answer: A) 12kx221kx2, where xx is the compression of the spring.
What functional group is present in an alcohol molecule?
Hydroxyl group (OH)
What molecule is produced by the pentose phosphate pathway, and how does its production differ from glycolysis?
NADPH is produced by the pentose phosphate pathway, which differs from glycolysis in that glycolysis primarily produces ATP.
What term describes the hierarchical arrangement of individuals or groups in society based on various factors such as wealth, power, and social status?
Social Stratification
In the reaction 2H2+O2→2H2O2H2+O2→2H2O, if 4 moles of hydrogen gas (H2H2) react completely with excess oxygen gas (O2O2), how many moles of water (H2OH2O) are produced?
2 moles of water (H2OH2O) are produced.
A scuba diver descends to a depth of 30 meters below the surface of a lake. Assuming the density of water is 1000 kg/m31000kg/m3 and the acceleration due to gravity is 9.8 m/s29.8m/s2, what is the approximate water pressure experienced by the diver at this depth?
294kPa
What is the name of the reaction in which a carboxylic acid reacts with an alcohol in the presence of an acid catalyst to form an ester and water?
Esterification
Name the protein complex responsible for protein translocation across the endoplasmic reticulum membrane.
The protein complex responsible for protein translocation across the endoplasmic reticulum membrane is known as the translocon complex.
What is the process by which individuals learn and internalize the values, norms, and behaviors of a given society or culture?
Socialization
How many grams of carbon dioxide (CO2CO2) are produced when 16 grams of methane (CH4CH4) react completely with excess oxygen gas (O2O2) according to the balanced chemical equation CH4+2O2→CO2+2H2OCH4+2O2→CO2+2H2O?
44 grams of carbon dioxide (CO2CO2) are produced.
What is the name for the phenomenon where a change in the velocity of an object results in a net force acting on it, according to Newton's first law of motion?
Inertia
What is the IUPAC name of the following compound: CH3CH2CH2COOH?
Propanoic acid
Identify the subunits of ribosomes involved in protein synthesis.
The large and small subunits of ribosomes are involved in protein synthesis. The A, P, and E sites are locations on the ribosome where tRNA molecules bind during translation.
What is the functional unit of the kidney responsible for filtering blood and producing urine?
Nephron
What mass of potassium iodide (KIKI) is required to react completely with 100 grams of lead(II) nitrate (Pb(NO3)2Pb(NO3)2) according to the balanced chemical equation 2KI+Pb(NO3)2→2KNO3+PbI22KI+Pb(NO3)2→2KNO3+PbI2?
The mass of potassium iodide (KIKI) required is calculated using stoichiometry.
What is the term for the resistance of a material to being deformed elastically when stress is applied, typically expressed as the ratio of the stress applied to the resulting strain?
Young's modulus
What is the product of the following reaction: CH3CH2Br + KCN → ?
CH3CH2CN (nitrile)
What type of molecules typically bind to G protein-coupled receptors (GPCRs) to initiate downstream signaling?
Small molecules such as hormones or neurotransmitters typically bind to G protein-coupled receptors (GPCRs) to initiate downstream signaling.
What is the term for the electrical signal transmitted along the membrane of a neuron, allowing for communication between neurons and with other cells?
Action potential
A solution contains 50 grams of sodium chloride (NaClNaCl) dissolved in water. What volume of 0.2 M silver nitrate (AgNO3AgNO3) solution is required to completely precipitate all the chloride ions as silver chloride (AgClAgCl) according to the balanced chemical equation NaCl+AgNO3→AgCl+NaNO3NaCl+AgNO3→AgCl+NaNO3?
The volume of 0.2 M silver nitrate (AgNO3AgNO3) solution required is calculated using stoichiometry.
What is the term for the force exerted by a fluid on an object moving through it, perpendicular to the object's velocity, due to differences in pressure across the object's surface?
Drag Force
What is the major product of the following reaction: CH3CH2CH2OH + PCl5 → ?
CH3CH2Cl (ethyl chloride)
Which enzyme is responsible for joining Okazaki fragments during DNA replication?
DNA ligase is responsible for joining Okazaki fragments during DNA replication.
What is the system in the body responsible for producing and secreting hormones that regulate various physiological processes?
Endocrine system